Hi Dom,
From inside the oven remove the rear plate - normally 2 - 6 screws. This will reveal the element and fan blades. To remove the element just undo the screws holding it in place and carefully ease the element out.
There isn't much information on your model, however, you should be able to match it up from the pictures on our site here:
http://www.ukapplianceparts.com/elements.asp?search_fd0=Fan%20Oven%20Element&search_fd3=diplomat&multisearch_fd3=5
Copy and paste in to your browser.
Lee
January 2007